ecocodes
Volume E · Indian defenses‹ E57E59 ›
a1b2c3d4e5f6g7h8
Reference position · Black to move

E58 Nimzo-Indian Defense: Normal Variation, Bernstein Defense, Exchange Line

E58 holds a single named line. It leaves E56 (Nimzo-Indian Defense: Normal Variation, Gligoric System, Bernstein Defense) with 8.a3 Bxc3 9.bxc3. At 17 plies, its reference line is the third-longest of the 40 Nimzo-Indian Defense codes. Both kings have castled by the end of the reference line, White on move 7 and Black on move 4.

Score sheet
#WhiteBlack
1d4Nf6
2c4e6
3Nc3Bb4
4e3O-O
5Bd3d5
6Nf3c5
7O-ONc6
8a3Bxc3
9bxc3

The move that completes E58

The reference line of E59 plays all of these moves and continues beyond them; E58 is the position reached at 9.bxc3.

  1. 9.bxc3 The b-pawn takes the bishop on c3, covering b4 and d4, opening a line for the bishop on c1.

The road to E58

  1. 1.d4 … 6.Nf3eight earlier stops: A40, A45, A50, E20, E40, E46, E47, E48
  2. 6...c5E53 Gligoric System
  3. 7...Nc6E56 Bernstein Defense
  4. 9.bxc3E58

The position after 9.bxc3

White has brought out the knight on f3 and bishop on d3; Black the knight on c6 and knight on f6. White has a half-open b-file. Black could capture with Nxd4, cxd4, dxc4. Black is to move and has 33 legal moves.

WhiteBlackMaterial (pawn units)3636Minor pieces developed22Moves spent on pawns53Pawns on d4, e4, d5, e511Squares attacked in the other half85Doubled pawns10castled kingside, move 7castled kingside, move 4

Codes that branch off from E58

The reference lines of one other code leave E58 from the position after 9.bxc3, each with its own moves.

CodeMovesReference line
E599...dxc4 10.Bxc4Nimzo-Indian Defense: Normal Variation, Bernstein Defense

Closest boards in other codes

CodeLineDiffers on
E29Nimzo-Indian Defense: Sämisch Variationseven squares: e1, f1, g1, h1, f3, d5, d7
E57Nimzo-Indian Defense: Normal Variation, Gligoric System, Bernstein Defenseeight squares: b2, c3, d3, b4, c4, d4, c5, d5
E49Nimzo-Indian Defense: Normal Variation, Botvinnik Systemnine squares: e1, f1, g1, h1, f3, c5, c6, c7 …
E54Nimzo-Indian Defense: Normal Variation, Gligoric System, Exchange Variationten squares: a2, b2, a3, c3, d3, b4, c4, d5 …
E55Nimzo-Indian Defense: Normal Variation, Gligoric System, Bronstein Variationten squares: a2, b2, a3, c3, d3, b4, c4, d5 …
E53Nimzo-Indian Defense: Normal Variation, Gligoric System11 squares: e1, f1, g1, h1, a2, b2, a3, c3 …
E28Nimzo-Indian Defense: Sämisch Variation12 squares: e1, f1, g1, h1, d3, f3, c5, d5 …

Where lines continue from here

One named line filed under other codes passes through the position after 9.bxc3. It belongs to the code listed above.

Volume E

  1. 00
  2. 01
  3. 02
  4. 03
  5. 04
  6. 05
  7. 06
  8. 07
  9. 08
  10. 09
  11. 10
  12. 11
  13. 12
  14. 13
  15. 14
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  17. 16
  18. 17
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  20. 19
  21. 20
  22. 21
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  25. 24
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  28. 27
  29. 28
  30. 29
  31. 30
  32. 31
  33. 32
  34. 33
  35. 34
  36. 35
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  38. 37
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  40. 39
  41. 40
  42. 41
  43. 42
  44. 43
  45. 44
  46. 45
  47. 46
  48. 47
  49. 48
  50. 49
  51. 50
  52. 51
  53. 52
  54. 53
  55. 54
  56. 55
  57. 56
  58. 57
  59. 58
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  64. 63
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  72. 71
  73. 72
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  90. 89
  91. 90
  92. 91
  93. 92
  94. 93
  95. 94
  96. 95
  97. 96
  98. 97
  99. 98
  100. 99

Open this line in the finderAll Nimzo-Indian Defense codes